1. Using data from 2005 and projected to 2017, the total number of Starbucks stores in the world can be modeled by the cubic function = 10.3 400 + 5590 8694, where x is the number of years after 2000 and y is the total number of stores.

a. Graph the function on the window [2, 20] by [8000, 23,000]. *You can post a screen shot here if that's easiest or sketch the graph

b. What does the model predict the number of stores will be in 2020? Show or explain how you got your answer.

c. Does the number of stores ever decrease over this period of years, according to the model?